[mythtv-users] Lengthy delay watching recordings

[Michael T. Dean]

On 05/22/2012 05:20 PM, Josu Lazkano wrote:
> 2012/5/22 Michael T. Dean
>
>> On 05/22/2012 04:51 PM, Josu Lazkano wrote:
>>
>>> Hello, I have same problem on 0.25. My system is a combined frontend
>>> backend.
>>>
>>> MySQL data is on the same partition as the system:
>>>
>>> /dev/sda1 on / type ext4 (rw,relatime,errors=remount-**
>>> ro,user_xattr,barrier=1,data=**ordered)
>>>
>>> How could I change the barrier on my partition?
>>>
>> You should mention which distro you're using and then people will be able
>> to provide appropriate directions for your distro's configuration tools.
>>
>> That said, I'm not saying you /should/ disable barriers.  I think it's
>> well worth testing with barriers disabled, but you will need to determine
>> whether you want performance at the expense of safety by disabling barriers.
> Thanks Michael,
>
> I am using Debian, on the stable version (0.24) the fs was EXT3 and there
> was no long time to start the recording. Now with testing version (0.25)
> the fs is EXT4 and it takes long.
>
> I just read that it will be dangerous to disable the barriers, so I will
> read more.
>
> Thanks and best regards.

FWIW, here's the "generic" way of disabling barriers:

http://www.gossamer-threads.com/lists/mythtv/users/414769#414769

(so, for example, adding that as an option in /etc/fstab), but not sure 
if anything in the distro will overwrite your changes or whatever.  The 
thread also has some discussion and information.

Mike